My son received an old Big Hauler Northern Express train for his Birthday.   I am trying to find instructions for the train. The smoke does not seem to work. I was able to find a battery compartment where a 9 volt goes to make a chugging sound, but other than that I am clueless as to anything else the train might do.  Does anyone happen to have an old instruction booklet for this train or know where to get one.  The ones on line seem to be for new trains.  Thanks.